Tractor attachment



July 17, 1928. "1,677,482

A. C.'LINDGREN ET AL TRACTOR ATTACHMENT Filed Sept. 17, 1926 2 Sheets- 3mm l Patented July 17, 1928.

UNITED STATES 1,677,482 PATENT OFFICE.

ALEXUS C. LINDGREN, OF CHICAGO, AND ARTHUR D. GALLAGHER, OF CANTON, ILLINOIS, ASSIGNORS T INTERNATIONAL HARVESTER COMPANY, OF CHICAGO, ILLINOIS A. CORPORATION OF NEW JERSEY.

TRACTOR ATTACHMENT.

Application filed September 17, 1926. Serial No. 136,072.

This invention relates to tractor 0 erated is preferably a rigid flat meta-l bar with a farm tools and particularly means or oprstraight transverse portion and arms 16 extending at rlght angles therefrom. Thev crating planting mechanism behind a trac-.

tor.

The main object of the invention is to provide a planting attachment of slm le structure that will be directly connecti le to the rear of a tractor and be supported thereby. A further object is to provide simple and efiicient means on such structure for driving the planting mechanism and controlling its operation. In its specific aspect the purpose of the invention is to provide a planting attachment capable of use wlth middle breaker plows in the practice of lister planting, the attachment herein disclosed being particularly adapted for use in conjunction with a middle breaker plow attachment of the type described and claimed in assignees copending application Serial N 0. 731,104, filed August 9, 1924.

The objects stated, as well as other objects and advantages whichlwill be ap arent to those skilled -in the art to which t e invention relates, are attained by roviding a supporting structure for attac ment to a tractor and on .which planting units are carried in a novel manner and driven from a novel form of driving mechanism carried on of power such as a ground engaging trailer wheel. Referring to the drawings, Fig. 1 is a plan view showing the rear end of a tractor carrying an attachment embody- 2 ing a wide tread and comprising an arched rear axle structure having a transverse housing 10 and depending housings 11 fixed to the ends of the transverse housing and containing transmission mechanism for the spindles of the traction wheels 12. The central portion of the housing, enclosing the differential, carriesthe operators seat 13. On the inner surfaces of the housings 11 there are inwardly projecting trunnions-or intles 14 which are the supporting elements or the arms of a rearwardly projecting arched or U-shaped frame member 15 forming part of a draft frame. The member 15 the supporting structure including a source arms 16 carry detachable bearing brackets 17 which are mounted on the pintles 14. Suspension links 18 connect the arms 16 with brackets 19 fixed on the housings '11.

Beneath the forward end of eacha'rm 16 there is secured 3. depending draft bracket 20 (Fig. 2) which is preferably a bar looped nected between its ends to the plow beam 1 below by a lifting link or chain 29. A separate lift is thus provided for each plow and actuation of either lever 27 will cause the associated beam and parts carried thereby to be shifted bodily in a-verticaldifrection the forward 'endof each beam being permitted to move vertically b reason of the free movement of the ends-o bar 22 in the guide-ways 21, upward movement therein being assisted by tension springs. 30 (Fig.

Thestructure so fardescribed is, in all essentials, that more particularly described and claimed in the co nding application above mentioned and, is included in the present invention to the extent that it is -included in and coo crates with the additional structure now to edescribed."

In order to make a novel ands'imple plant ing attachment out of the organization hereto ore described,-each of the on it above the plow body with the seed boot 32 located behind the middle breaker plow as usual for lister planters. Both dispensing mechanisms are preferably driven by a'sin'gle seed plate driving shaft 33 which is both flexible and telescopic in order to plow beams 23' has'a seed hopper 31, containing any preferred seed dispensing mechanism, mounted permit independent movement of the plow v beams. Power for driving this shaft is obtained from a ground contacting drive wheel 34 fixed to a double crank shaft 35 journaled on the rear end of a trailer frame 36 which 6 is preferably composed of spaced longitudinal bars connected b transverse arched casting 37 which both race and give necessary Wei ht to the frame. The front end of the trai or frame is connected to a clamp bracket 38, having clamp collars surrounding bar 22. This bracket has upstanding bearingarms on its ends in which a double cranked counter shaft 39 is journaled, the ends ofthis shaft serving. as points of pivotal connection for the trailer frame. The respective cranks of shafts 35 and 39 are opposed and connected by pitmen rods 40 and rotation of wheel 34 is thus transmitted to shaft 39, this structure constitutin but one preferred manner of effecting t is drive. At one end the-bracket is formed with a laterally projecting bearing arm 41 in which is j ournaled the forwafd end of a connecting drive shaft 42. A bevel pinion 43 on this end of the f shaft is in mesh with a similar pinion 44 on the end of shaft 39. The rearendof shaft 42 is journaled and supported in a bracket 45 projecting from the ase casting of one of the seed dispensin devices and has a pinion 46 meshing wit fixed on shaft 33 adjacent one of the plantin units. The shaft 42 is provided with universal joints and is referably composed of telescopically related sections, as shown,

so that relative movements in the parts ofv the attachment may occur without affecting the operation of the planting-devices. A brace rod 48 is pivoted on bracket arm 41 and extends to bracket 45 in parallel relation to the shaft 42.

Mechanism is provided for lifting the 3 trailing frame when either or both of the plow beams are lifted and this preferably consists of a transverse bar 49 suspended,'as by hooks 50, from the extreme ends of the lifting arms 28. At a point near its middle the bar'49 is connected, as b a chain 51, with the rear or free end 0 the trailing frame 36; It is to be noticed that the lift- 50 ing connection 51 has its eflective point of connection to arms 28 farther removed from the axis of said arms than the liftin connections 29 to the beams. Therefore, ifting of eitherbeam will impart an increased de- 55 gree of movement to one end or the other of bar 49 a suflicient amount of which will' be transmitted through chain 51 to raise the trailing frame high enough to bring'wheel 34 out of contact with the ground and stop operation of the planting mechanism. Lifting of both beamsfor transport purposes will, of course, increax the height to which the trailing frame is raised by lifting of one .beam only.

M In its broadest aspect the construction and a pinion 47 arrangement disclosed affords a planter attachment for tractors which is directly supported on the tractor instead of on supporting wheels and which includes self contained means for driving the planting mechanism. In its more specific aspect the structure represents a planting attachment capable of being added to or mounted on a plowing attachment of known construction.

WVhile the structure described exem lifies a preferred embodiment of the invention, it

is capable of considerable variation within the scope of the following What is claimed is: l. The combination with a tractor,'of an implement attachment com rising a transverse draft bar, means for p1votally supporting said draft bar on the tractor, an implement beam secured to each outer portion of said draft bar, a driven implement carried thereby, a trailing frame pivoted on the central portion of said draft bar, aground engaging drive wheel journaled in said frame, driving connections between said wheel and implement. means on the tractor for lifting and lowering each implement beam individually, and means for lifting and lowering the trailing frame upon actuation of either beam lift.

2. The combination with a tractor, of an implement attachment comprising a transverse draft bar, means for pivotally supporting said bar on the tractor, an implement beam secured to each outer portion of said draft bar, a planting device mounted on each beam, a trailing frame pivoted on the central portion of said draft bar, a ground engaging drive wheel journaled in said frame, driving connections between said wheel and the planting devices, a lifting lever mounted on the tractor over each implement beam and having a crank-arm connected with the adjacent beam, a cross-link connecting said crank-arms, .and a liftin connection between the trailing frame an the cross-link.

3. In a planting attachment for tractor drawn plows of the type having beams connected to a draft frame on the tractor and claims.

means for lifting and lowering the beams,-

the combination of planting devices adapted for mounting on the respective beams, driv ing means for said devices comprising a frame adapted to be pivoted on the draft frame to trail adjacent said beams, a ground engaging drive wheel on said trailing frame,

flexible driving connections between said wheel and the planting devices, and lifting means for the trailing frame adapted for connection to the beam lifting means. i

4. A planter attachment for tractors comprising a supporting frame having means for rigid attachment to the rear of a tractor to extend rearwardly, a pair of fioatin beams suspended from said frame, a planting device on each beam, a ground wheel carried on a separate floating connection with said frame, dIIVIIIgTZCOHIIQCtIOIIS between sa d wheel and the Planting;- devices, and. means on the supporting frame for raising and lowering the beams and ground Wheel.

5. A planter attachment for tractors comprising a supporting frame having means for rigid attachment to the rear of a tractor to extend rearwardly, a pair of floating beams carried on members supported only by said ,frame, a planting device on each beam, and separate means alsocarried by said frame for driving the planting mechanism comprising flexible driving shafts connecting the planting devices to 'said driving means. 1 In testimony whereof We afiix our signatures. 

